Oregon California Highway Journey Through Mountain Roads
A traveler chronicles the route from Portland to Sacramento via the Inland Empire noting rough rubblestone paving south of Portland, asphalt and concrete stretches, and the impact of gumbo soils on roads. He praises the Siskiyou mountain stretch to Ashland, the 6 percent grade summit, and the paved yet partially rock based Sisson to Redding road, while warning that irrigation flood damage and hot weather soften asphalt creating ruts and cracks.